Custom Build. Plenty of power for gaming and Video encoding. Pretty new so haven't had the time to tart it up - just wanted to get it working first. Surprisingly, it booted first go after the initial bios setup. I have been pretty lucky in this regard, being my 6th self built weapon with no problems with mixing and matching hardware. I am looking at customising some wiring to hide them from view, move the pump etc somewhere else etc. Should look ok once thats done. May chuck in one of my old GTX280's for Physics.